X s self-threading shuttle



(No Model.)

J. B. DAUDELIN. SELF THREADING SHUTTLE.

No. 579,046. Patentedlvrar. 16, 1897.

llnrrr;

Farnrtr rrrcn.

JEAN BAPTISTE DAUDELIN, OF FALL RIVER, MASSACHUSETTS.

sELF-THREADING SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 579,046, dated March 16, 1897.

v Application iiled August l2, 1896. Serial No. 602,565. (No model.)

To all whom it may concern:

Be it known that I, JEAN BAPTISTE DAUDE- LIN, a citizen of the United States, residing at Fall River, in the county of Bristol and State of -Massachusetts, have invented cer tain new and useful Improvements in Self- Threading Shuttles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improvement in selfthreading shuttles; and it consists in the novel features hereinafter fully described, reference being had to the accompanying drawings, which. illustrate one form in which I have contemplated embodying my invention, and said invention is fully disclosed in the following description and claims.y

Referring to the said drawings, Figure l represents a vertical central sectional view of a portion of a shuttle embodying my invention. Fig. 2 is a top plan view of the same. Fig. 3 represents a vertical transverse section on line 3 3 of Fig. 2. Fig. 4t represents a similar section on line a 4 of Fig. 2. 5 is a detail perspective view of the threadingplate. Fig. 6 is a detail perspective view of the tubular threadguide. Fig. 7 represents a transverse section of the said tubular threadguide. Fig. 8 is an elevation of thetension-post. Fig. Qrepresents a transverse section of said post on the plane of the inclined thread-grooves.

In the drawings, A represents the main body of the shuttle,'which is provided with the usual spindle-recess a and spindle a'. d2 represents a substantially circular threading-recess forward of the spindle-recess, communicating with the latter by means of a notch a3, through which the thread passes after leaving the spindle. The upper face of the shuttle surrounding the threading-recess a2 is a larger recessed portion having inclined or curved walls or faces a, sloping downwardly to said recess on three sides of the same. The body A of the shuttle is also provided at one side of the threading-passage with a delivery eye or passage a5, communicating with said recess, and on the opposite side with a blow-hole or passage a6, which is exactly in line with the deliveryeye. A vertical threading-slit a7 is formed in the shuttle adjacent to the threading-re-A aperture ?)4 in said securing-arm.

cess communicating with the delivery-eye.

In rear of this threading-slit a7 and at one side ofthe threading-recess a3 is a horizontal shoulder as, which is slightly higher than the adjacent inclined or curved walls or faces a4 and serves as a support for the horizontal threading-plate B, so that said plate as it extends out from said' shoulder over said curved face a4 forms a thread-passage beneath said plate.

The plate B (shown in detail in Fig. 5) consists of a horizontal portion b, substantially semicircular, having a downwardly-extending lug or projection b' at one end adapted to enter a recess in the shuttle-body in rear of the shoulder as, upon which the plate rests. The said horizontal portion of the plate is provided at the side of the shuttle opposite to the projection b with a turned up lip b2, which lies above and parallel to the inclined face a4, so as to direct the thread beneath the plate B. (See Fig. 4.) The plate B is also provided with a downwardly-extending securing-arm b3, which extends from the horizontal portion l) down into a recess in the shuttle-body and is secured in position by a horizontal retaining-pin C, which passes entirely through the shuttle transversely at this `point and passes through an The horizontal part b of the plate B is also provided with a downwardly-extending guide-arm h5, which extends into the threading-recess below the level of the inclined or curved face at and assists in guiding the thread into said recess after it has been drawn under the horizontal portion of the plate B.

D represents the tension-post, which con sists of a post of cylindrical form, having at its lower end a reduced stem d, which is adapted to enter a vertical recess or aperture c in the shuttle-body, (see Figs. l and 4,) and provided at the top with a reduced head d", which is preferably of greater diameter than the stem d and is of polygonal form, in this instance being shown hexagonal. The horizontal part b of plate B is provided with a polygonal (in this case hexagonal) hole or aperture t, adapted to engage the polygonal head CZ' of said post after its stem CZ has been inserted in the aperture co9, and the pos-t will therefore be held in position without any nuts, screws, or other devices, and as the stem iits smoothly into the hole e there is no IOO danger of splitting the shuttle-body. It will also be seen that by loosening the plate B (by removing the pin C) and disengaging it from the head of the post said post can be turned or adjusted to a number ot different positions, according to the shape of the polygonal head, and when the plate B is again secured in place the post will be rigidly held in its adjusted position. The post D is provided adjacent to the point where the stem begins with a liattened portion d2, forming a shoulder cl3 above the same, beneath which the thread passes, and from this [lattened p0rtion an inclined spiral groove d4 leads upwardly half-way around the post and terminates ata point considerably above the shoulder d3.

I intend to make my improved shuttles having both left-hand and right-hand delivery-eyes, and in order to make my post in such form that it can be used with either form of shuttle I provide it with two ot' such spiral grooves d4, which start from opposite sides of the shoulder cl3 and unite or merge on the opposite side of the shuttle. This saves making one kind of post for one shuttle and another post for the other. As the thread, atter the shuttle is threaded, passes through the threading-recess in a horizontal direction, if the post is turned so that the thread shall simply pass beneath the shoulder d3 there will be little, if any, tension on the thread. By turning the post, however, seas to torce the thread to follow one of the upwardly-inclined grooves d4 the thread will be drawn out ofV a straight line and a tension will be put on it as it enters, passes through, and leaves the groove, the amount of tension depending upon the position of the post. The post can therefore be set, as before described, to give any desired amount of tension on the thread, and the device is simple and accurate and cannot get out of order.

E represents a tubular thread-guide which is placed in the delivery-.eye of the shuttle below the vertical threading-slit al, which communicates with the tl'iread-passage below the plate B. It consists of a piece of sheet metal bent into tubular form and having its edges the one overlap pin g but separated from the other. The outer side is provided with an aperture e and the inner edge is provided with a curved projection c, which extends into the aperture e and is bent slightly outward, so that its point is in the curved plane of the outer edge. (See Fig. 7.)

It will be readily seen that if a thread is drawn beneath the overlapping edge it will follow down on the outside of the projection e' until it passes over its point, when it cannot fly out of the thread-guide again even il" the thread should become very slack.

The operation of threading is very quick and simple. The thread is drawn from the spindle toward the point of the shuttle and passed beneath the lip b2 of plate B. The thread is then drawn toward the delivery-eye,

which causes it to pass into the thread-passage beneath the plate B, slide down the inclined face c4, strike the downwardly-extending guide-arrn h5, and pass into the threadingrecess and around the tension-post D, at the same time passing down the vertical threadin g-passage E, when the threading is complete. In case the thread should catch in the threading-recess or there should be a collection of fuzz or lint therein it may be removed 0r the threading completed by placing the mouth over the blow-hole and blowing or drawing air through it. It is also to be noted that the tube or thread-guide E is squared at both ends, so that it can be used in shuttles having either left or right hand delivery-eyes.

\Vhat I claim, and desire to secure by Letters Patent, is-

l. A shuttle provided with a spindle-recess and a threading-recess forward of and communicating with the spindle-recess, a tensionpost in said threading-recess having a stem engaging a recess in the shuttle-body, provided with an in clin ed thread-en gagin g groove and having a polygonal head and projecting portions below said head, and a threadingplate secured to the shuttle-body covering said threading-recess provided with a polygonal aperture to engage the polygonal head of said post, the adjacent portions of said plate engaging the projecting portions of said post below said head and holding the post rigidly in position, substantially as described.

2. A shuttle provided with a threading-recess, a tension-post in said recess having an inclined thread-groove therein, said post having a stein engaging an aperture in the'shuttlc-body, and havin ga polygonal head, a plate covering said threading-recess and having a polygonal aperture engaging the polygonal head of said post and means for removably securing said plate to the shuttle-body whereby said post may be adjusted by removing and replacing said plate, substantially as described.

3. A shuttle provided with a threading-recess, a delivery-eye at one side of said recess, a tension-post having a portion engaging a recess in the bottom ofthe threading-recess,said post being provided with a shoulder adjacent to the bottom of said threading-recess and inclined grooves extending from said shoulder upwardly and meeting at a point above said shoulder on the opposite side of the post, said post havinga polygonal head, and a plate def tachably secured to the shuttle-body extending over the threading-recess and having apolygonal aperture tting the polygon al head of said post, whereby said post can be used withv shuttles having the delivery-eye at either side of the said threading-recess, substantially as described.

In testimony whereof I a'iiX my signature in presence of two witnesses.

JEAN BAPTISTE DAUDELIN. Vitnesses:

GUY V. H. SLADE, EDWARD A. TI-rURs'roN.

IOC)

IIO 

